Highly birefringent gold-coated SPR sensor with extremely enhanced amplitude and wavelength sensitivity

Jamil, Md. Abu; Ahsan, Syed Asir Hamim; Khan, Md Moinul Islam; Mehjabin, Fariha; Chowdhury, Jubair Alam; Islam, Mohammad Rakibul

doi:10.1140/epjp/s13360-021-01220-6

Cited by 36 publications

(8 citation statements)

References 40 publications

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“…Confinement loss is a crucial parameter because it can significantly impact the sensitivity and accuracy of the optical sensors. It measures the extent of light that is attenuated when it is propagate within the core region of the PCF [35]. The confinement loss equation can be expressed as follows [19]:…”

Section: Resultsmentioning

confidence: 99%

A Novel Plasmonic Sensor Based on Dual-Channel D-Shaped Photonic Crystal Fiber for Enhanced Sensitivity in Simultaneous Detection of Different Analytes

Divya

Selvendran

Raja³

et al. 2024

IEEE Trans.on Nanobioscience

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A dual-channel D-shaped photonic crystal fiber (PCF) based plasmonic sensor is proposed in this paper for the simultaneous detection of two different analytes using the surface plasmon resonance (SPR) technique. The sensor employs a 50 nm-thick layer of chemically stable gold on both cleaved surfaces of the PCF to induce the SPR effect. This configuration offers superior sensitivity and rapid response, making it highly effective for sensing applications. Numerical investigations are conducted using the finite element method (FEM). After optimizing the structural parameters, the sensor exhibits a maximum wavelength sensitivity of 10000 nm/RIU and an amplitude sensitivity of -216 RIU -1 between the two channels. Additionally, each channel of the sensor exhibits its unique maximal wavelength and amplitude sensitivities for different refractive index (RI) ranges. Both channels demonstrate a maximal wavelength sensitivity of 6000 nm/RIU. In the RI range of 1.31-1.41, Channel 1 (Ch1) and Channel 2 (Ch2) achieved their maximum amplitude sensitivities of -85.39RIU -1 and -304.52 RIU -1 , respectively, with a resolution of 5x10 -5 . This sensor structure is noteworthy for its ability to measure both amplitude and wavelength sensitivity, providing enhanced performance characteristics suitable for various sensing purposes in chemical, biomedical, and industrial fields.

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Section: Resultsmentioning

confidence: 99%

A Novel Plasmonic Sensor Based on Dual-Channel D-Shaped Photonic Crystal Fiber for Enhanced Sensitivity in Simultaneous Detection of Different Analytes

Divya

Selvendran

Raja³

et al. 2024

IEEE Trans.on Nanobioscience

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“…Based on those detailed and in-depth fundamental studies discussed in the last section, the general growth behavior of deposited Au on different substrates has been fully understood. In recent years, more and more applications based on UTGL configurations have been reported, including the examples from optical applications, 6,7,96–106 electronic device applications, 107–115 and as seed layers. 116–125…”

Section: Applications Of Ultra-thin Gold Layersmentioning

confidence: 99%

“…Due to the effects of localized surface plasmon resonances (LSPR) and surface plasmon resonances (SPR), UTGLs exhibit unique optical properties in the visible and the near-infrared (NIR) regions. 126–129 The UTGL-based applications focusing on optical field include but are not limited to tunable optical responses or plasmons, 6,7,96,98 plasmonic sensor, 99,104 plasmonic printing, 97 surface-enhanced Raman scattering (SERS), 100,105 surface plasmon polariton (SPP) generation, 101,106 and infrared absorber. 102 The details of selected studies about these UTGL-based applications are summarized in Table 1.…”

Section: Applications Of Ultra-thin Gold Layersmentioning

confidence: 99%

State of the art of ultra-thin gold layers: formation fundamentals and applications

et al. 2022

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“…Sellmeir equation is used to obtain the refractive index of fused silica [37]:

{n}^{2}(\lambda )=1+\frac{0.696163{\lambda }^{2}}{{\lambda }^{2}-0.0046791486}+\frac{0.4079426{\lambda }^{2}}{{\lambda }^{2}-0.0135120631}+\frac{0.8974794{\lambda }^{2}}{{\lambda }^{2}-97.934003}

where n and λ are the refractive index of silica and the wavelength (in µm), respectively.…”

Section: Theoretical Modelling and Experimental Proceduresmentioning

confidence: 99%

Design of a dual spider‐shaped surface plasmon resonance‐based refractometric sensor with high amplitude sensitivity

Khan

Mehjabin

Chowdhury

et al. 2022

IET Optoelectronics

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This study presents an investigation on the performance of the sensitivity of a dual spidershaped surface plasmon resonance (SPR)-based photonic crystal fibre (PCF) refractive index sensor having unique design specifications. To evaluate the fibre guiding properties, Finite Element Method is used for utilising the monetarily accessible COMSOL Multiphysics version 5.3a. A gold layer has been used as the plasmonic material surrounding the fibre to ensure chemical stability, and a single fine coating of TiO 2 supported the improvement of gold attachment with the fibre. The structural air holes' design arrangement inside the PCF gives an enhanced sensitivity performance. The proposed PCF-SPR gives extremely reduced confinement losses. Numerous precise investigations on the fibre parameters show the highest amplitude sensitivity of 4233 RIU −1 in detecting the scope of the refractive index (RI) 1.32-1.41. 2.36 � 10 −6 and 1.18 � 10 −5 and are achieved as amplitude resolution and wavelength resolution, respectively. The highest confinement loss found for this sensor is recorded to be 6.22 dB/cm. The RI sensor can lead to the exact identification of organic chemicals and biological analytes for the proposed design specifications, providing good sensitivity with significantly reduced confinement loss.

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Highly birefringent gold-coated SPR sensor with extremely enhanced amplitude and wavelength sensitivity

Cited by 36 publications

References 40 publications

A Novel Plasmonic Sensor Based on Dual-Channel D-Shaped Photonic Crystal Fiber for Enhanced Sensitivity in Simultaneous Detection of Different Analytes

A Novel Plasmonic Sensor Based on Dual-Channel D-Shaped Photonic Crystal Fiber for Enhanced Sensitivity in Simultaneous Detection of Different Analytes

State of the art of ultra-thin gold layers: formation fundamentals and applications

Design of a dual spider‐shaped surface plasmon resonance‐based refractometric sensor with high amplitude sensitivity

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